#!/usr/bin/env python
# license removed for brevity
import rospy
from std_msgs.msg import String
 
def talker():
     pub = rospy.Publisher('chatter', String, queue_size=10)
     rospy.init_node('talker', anonymous=True)
     rate = rospy.Rate(10) # 10hz
     while not rospy.is_shutdown():
         hello_str = "hello world %s" % rospy.get_time()
         rospy.loginfo(hello_str)
         pub.publish(hello_str)
         rate.sleep()
 
if __name__ == '__main__':
     try:
         talker()
     except rospy.ROSInterruptException:
         pass